AV_CODEC_ID_YUV4 1465 libavcodec/codec_desc.c         .id        = AV_CODEC_ID_YUV4,
AV_CODEC_ID_YUV4   80 libavcodec/yuv4dec.c     .id           = AV_CODEC_ID_YUV4,
AV_CODEC_ID_YUV4   74 libavcodec/yuv4enc.c     .id           = AV_CODEC_ID_YUV4,
AV_CODEC_ID_YUV4  113 libavformat/isom.c     { AV_CODEC_ID_YUV4,   MKTAG('y', 'u', 'v', '4') }, /* libquicktime packed yuv420p */
AV_CODEC_ID_YUV4  303 libavformat/riff.c     { AV_CODEC_ID_YUV4,         MKTAG('y', 'u', 'v', '4') },